Per the above too-cute-for-words photo that Justin posted on Instagram, we’re pretty sure that if JB did dress up last night, it was as “the best big bro EVER.” Along with this COMPLETELY adorable photo of the Biebs mid-snuggle with his baby brother, Jaxon (who BTW is full-on cradling Justin’s cheek!!!!), the “Recovery” singer captioned: “This is love.” WE SEE IT!

GAHHHHH, like, who needs a floppy witch hat and face paint when you can just dress up as “you” being “the best you ever”?? Oh, we guess if JB was really in a pinch for a costume last night, he coulda just whipped his shirt off and said that he was dressed as Arnold Schwarzenegger circa the “Terminator” era. Cheapest Halloween costume, EVAR.